Color filter having quantum dot color conversion structure, display device including same, and manufacturing method therefor

Abstract

The present invention relates to a color filter having a quantum dot color conversion structure and a manufacturing method therefor. The present invention relates to a color filter having a plurality of quantum dot color conversion layers spaced apart from each other, wherein each of the quantum dot color conversion layers is a free-standing wire structure extending in a vertical direction from a substrate, and the ratio of the length to the width of the free-standing wire structure is 1 or more.

The invention claimed is: 
     
         1 . A display device including:
 a backlight unit;   a drive substrate on the backlight unit;   a liquid crystal module on the drive substrate; and   a color filter on the liquid crystal module,   wherein the color filter comprises multiple quantum dot color conversion layers spaced apart from each other, wherein   the quantum dot color conversion layers are free-standing wire structures configured to extend in a vertical direction from a substrate, and   a ratio of a length to a width of the free-standing wire structures is one or more.   
     
     
         2 . The display device of  claim 1 , wherein
 the multiple quantum dot color conversion layers comprise:   a first free-standing structure configured to convert excitation light of a first peak wavelength into emission light of a second peak wavelength; and a second free-standing structure configured to convert excitation light of the first peak wavelength into emission light of a third peak wavelength.   
     
     
         3 . The display device of  claim 2 , further comprising
 a third free-standing structure configured to transmit excitation light of the first peak wavelength.   
     
     
         4 . The display device of  claim 3 , further comprising
 the third free-standing structure is made of a transparent material.   
     
     
         5 . The display device of  claim 1 , wherein
 the ratio of the length to the width is two or more.   
     
     
         6 . The display device of  claim 1 , wherein
 the ratio of the length to the width is five or more.   
     
     
         7 . The display device of  claim 1 , wherein
 the ratio of the length to the width is 10 or more.   
     
     
         8 . The display device of  claim 1 , wherein
 the free-standing wire structures each comprise a body portion configured to have a small width compared to a foot portion thereof.   
     
     
         9 . The display device of  claim 1 , wherein
 the free-standing wire structures each comprise a foot portion and a body portion configured to have substantially the same width.   
     
     
         10 . The display device of  claim 8 or claim 9 , wherein
 the width of the body portion is less than one micron.